ArticleBMC ophthalmology2023
Refraction and ocular biometric parameters of preschool children in the Beijing whole childhood eye study: the first-year report.
Article in BMC ophthalmology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 8 citations in OpenAlex.
- Prevalence of visual impairment and refractive error-related risk factors in preschool children in beijing, China.BMC public health · 2025Article
- [Epidemiological characteristics of myopia and pre-myopia among preschool children aged 5-6 years in ten provinces of China].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2025Article
- Associations between refraction and ocular biometry in Chinese preschoolers aged 3-6 years: a cross-sectional study in Shunyi, Beijing.BMJ open · 2025Article
- Impact of growth parameters on refraction and ocular biometry in Chinese preschool children (3-6 years): the Beijing children eye study.Frontiers in pediatrics · 2025Article
- Risk factors for ocular biological parameters in Chinese preschool children: a cohort study from the Beijing whole childhood eye study.Frontiers in medicine · 2025Article
- Refractive status and ocular characteristics of preschool children with retinopathy of prematurity after different treatments.International journal of ophthalmology · 2025Article
- Article
- Refraction and ocular biometric parameters in 3-to 6-year-old preschool children : a large-scale population-based study in Chengdu, China.BMC ophthalmology · 2024Article
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8 authors at 5 institutions in 1 country.
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Abstract
backgroundPrevention of myopia should begin before school age. However, few population-based cohort studies have investigated refractive status in preschool children with cycloplegia. This study aimed to investigate the post-COVID-19 refraction and ocular biometric parameters of preschool children in Beijing Tongzhou District.
methodsA population-based cohort study of kindergarten children in Tongzhou District, Beijing, commenced in November 2021. The present study reports data from the first year of the aforementioned population-based study. We selected children aged 3-6 years from nine kindergartens. Biometric parameters, including axial length (AL), anterior chamber depth (ACD), and corneal radius of curvature (CR), were collected before cycloplegia. Cycloplegic refraction was also measured. The spherical equivalent (SE), lens power (LP), and AL-to-CR ratio were calculated. Multiple linear regression analysis was used to analyse the correlation between refraction and ocular biometric parameters.
resultsA total of 1,505 children completed the examination, and a mean SE of 1.24 ± 0.91 D was found. The overall prevalence of myopia was 1.93%. The mean AL, ACD, CR, LP, and AL-to-CR ratio were 22.24 ± 0.70 mm, 3.28 ± 0.26 mm, 7.77 ± 0.26 mm, 26.01 ± 1.56 D, and 2.86 ± 0.07, respectively. Longer AL, deeper ACD, larger AL-to-CR ratio, and lower LP were associated with older age; the CR was not significantly different among different ages. In the multiple linear regression analysis, after adjusting for sex and age, the model that included AL, CR, and LP explained 87% of the SE variation. No differences were observed in the prevalence of myopia or the SE in this particular age range.
conclusionThe findings of this study suggest that a large proportion of preschool children in Beijing are mildly hyperopic, with a considerably low prevalence of myopia. In preschool children, refractive development was found to present mild hyperopia rather than emmetropia or myopia, a phenomenon that is characteristic of this age range.
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